/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/WeightedLatticeImplicitObject.h
Note that if x is in an empty cell / outside the deformed lattice and bIncludeEmptyCells is false, this will return UE_BIG_NUMBER and Normal will be unchanged. SurfaceCoord will be invalid. When bIncludeEmptyCells is true, the closest non-empty lattice cell will be used to find the closest surface point.
[FReal](API\Runtime\ChaosCore\Chaos\FReal) PhiWithNormalAndSurfacePoint ( const [FVec3](API\Runtime\ChaosCore\Chaos\FVec3) & X, [FVec3](API\Runtime\ChaosCore\Chaos\FVec3) & Normal, [FEmbeddingCoordinate](API\Runtime\Chaos\Chaos\FWeightedLatticeImplicitObject\FEmbeddingCoordinate) & SurfaceCoord, bool bIncludeEmptyCells ) const